Lock bolt structure



y 1951 R. c. CERF, 'JR

LOCK BOLT STRUCTURE Filed May 9, 19.49

INVENTOR ROBERT C. CERF JR.

FIG. 6a

ATTORNEY .retractor bar structure; and r Y Patented July 2 4,

U I D ST S PME J' I Q LOCK'BOLT srauc'rumi Robert Carma, nojs Angeles, cant, assigllor to Hollymade Hardware Manufacturing Company, I Los Angeles c alifg a corp oration of California ldpp licatiol l May-ti, 1949, Serial No. 92,185 I 4 Claims...

Q 1 I J L' I l Thisinvention relates to a lock bolt structure and in particular to means for attaching a retractor bar to alatch bolt.

gol. 292-2) tractor bar. A further objectis to provide. a latch bolt which may be formed in simple draw molds with a minimum of machine finishing which may be rigidly attached'to a retractor barmade from a metal stamping.

being provided for holding one end of the coil spring 28 whose opposite end abuts the innerend of the housing H to keep the latch bolt l8 outwardly extended. Theretractor' bar Niextends through the housing liand is provided with a head 29'which is engageable by retractor fingers 39 in thelock mechanism.

My invention resides in the structure and manner of assembly of the latch bolt and the retractor bar, this assembly being used in a spring latch mechanism as above described. Referring particularly to Figures 4.5, and 6, showing the details or the assembly of the latch bolt, retractor These and other objectsare attained by my invention which will be understood from, the following description, reference being made to the accompanying drawing'which forms a Part hereof, in which:

Figure 1 is. atop plan vievwwith parts broken and the attached retractor bar structure of my invention;

Figure 2 is a sectional View taken on the line :22 of Figure-"1';

Figure .3 is a cross-sectionalviewtakenon the line 33 of Figure 2;

Figure 4 is a perspective disassembly of my Llatch bolt and retractor bar structure;

Figure-5 is a plan view ofmy latch boltqand Figure 6 is a side elevation'alview of the lateh .bolt and retractor bar structure shown in Figure 5.

Referring to the drawings, particularly Fig- 1 l by the screw [5 in the hole It in the flush plate M3 and in the threaded hole H in the outer flush iplate i2. The latch bolt i8 is shaped in the usual way with a rounded bevel on the face It which strikes the keeper on closing the door, and has a flat surface 29 parallel to the bolt axis on the opposite side which engages the keeper and locks the door. An auxiliary latch bolt 2! adapted to deadlock the main latch bolt when the latter is inside the keeper and the latter is depressed by strikingthe edge of the keeper, is provided in sliding contact with: the flat face 20, a spring 22 pressing between the inner end of the housing I l and said auxiliary latch bolt to keep the latter .in extended position, the shoulder 23 abutting the inner end of the main latch bolt [8. v

The main latch bolt I8 is provided with a retractor bar 2 3 which is rigidly attached thereto by means of the washer 25 setin the recess 26 of the latch bolt is, a right-angled tab 21 on the washer bar and washer, the latch bolt' consistsof a shaped metal piece having a generally cylindrical shape with the bevelled surface it and the opposite fiat surface 26 following the customary shape of latch bolts. The inner end of the latch bolt I8 is recessed to form a marginal rim 3! which extends inwardly from the inner end of the latch bolt; the rim being provided with openings t4 therethrough for purposes described below; A deep slot recess 38' is centrally disposed below the base of the marginalrim 3i" and is preferably provided with slightly tapered edges," the slot beinglonger at the top than at the bottom of the recess. A washer 25 is adapted to fit within therim Hand is provided with looking tabs 33 which fit into the'opposite openings "iii in the marginal rim of the latch bolt. The Washer 25 is'alsoprovided With a slot 35' which is Centrally located and is adapted to receive the retractor bar 2 3. Other projections from the washer, in-

cluding the guide tab 35 for the auxiliary latch bolt and the spring tab 21 may be provided on the washer. The retractor bar i l consists of an elongated bar having an enlarged head 3'8 with shoulders til which is adapted to fit in the deep slot recess 38 in the latch bolt iii, the head being tapered at the edges to closely fit the tapered edges 32 of the slot. The retractor bar may be joined to the washer by other means than the slot and abutting shoulders.

In making the assembly, the washer 25 is slipped over the retractor bar 24 to an abutting position against the shoulders lii oi theenlarged head 31 and the head is inserted in the slot 38, v in the latch bolt 58 which it fits closely, with the looking tabs 33 extending into the rim windows deep slot 38 permits accurate fitting of the head The provision of the slight taper in the slot when pressed together by the rolling operation which turns the rim over and against the edges of the washer 25. This assembly provides means for making a low cost latch bolt and bar with a minimum amount of hand work inassembly.

I claim:

1. In a lock bolt structure, a latch bolt having a beveled outer end and an inner recessed end including a marginal rim extending at least partly around said inner end face, said rim having openings therethrough, and having a deep clot centrally disposed from said recessed face, said slot having its end walls tapered slightly in Wardly toward the bottom of the slot; a retractor bar having an enlarged end portion with abu ment shoulders, said end portion being tapered and adapted to closely fit in the deep slot of said latch bolt; a retainer washer adapted to fit within the marginal rim of said latch bolt, said washer having locking tabs extending into the openings in said rim, and said washer having a centrally disposed slot adapted to receive said retractor bar, said washer abutting said shoulders to prevent withdrawal of said bar; and the marginal rim of said bolt being rolled against the edge of said washer to hold the bolt, washer and bar in rigid assembly.

2. In a lock bolt structure, a latch bolt having a beveled outer end and an inner recessed end including a marginal rim extending at least partly around said inner end face, said rim having openings therethrough, and a retainer washer adapted to fit within the marginal rim of said latch bolt, said washer having tabs extending into the openings in said rim, some of said tabs projecting outside the limits of said bolt, and said washer being adapted to engage the enlarged end of a centrally disposed retractor bar disposed at right angles to said washer; and the marginal rim of said bolt being rolled over the edge of said washer to hold the bolt, washer and bar in rigid assembly. i

Inlia lockbolt structure, a latch bolthavin'g a beveled outer end and an inner recessed end ineluding a marginal rim extending at least partly" around said inner end face, said rim having (openingstherethrough, and a retainer washer adapted to fit within the marginal rim of said latch bolt said washer having tabs extending through the openings in said rim, and said washer being slotted to receive the shank of a centrally disposed retractor bar having an enlarged head, said bar being disposed at right angles to said washer; and the marginal rim of said bolt being rolled over the edge of said washer to hold the bolt, washer and harm rigid assembly.

4. In a lock bolt structure, a latch bolt having an inner recessed end including a marginal rim extending at least partly around said inner end face, said rim having an opening therethrough, and having a deep slot centrally disposed from said recessed face, said slot having its end walls tapered slightly inwardly toward the bottom of the slot; a retractor bar having an enlarged end portion with abutment shoulders, said end portion being tapered and adapted to closely fit in the deep slot of said latch bolt; and a retainer washer adapted to fit within the marginal rim of said latch bolt, said washer having a tab extending into the opening in said rim, and said washer having a centrally disposed slot adapted to receive said rectractor bar, said washer abutting said shoulders to prevent withdrawal of said bar; the marginal rim of said bolt being rolled against 7 the edge of said washer to hold the bolt, washer and bar in rigid assembly.

ROBERT C. CERF, JR.

Name Date Schlage Aug. 2, 1938 Number 

